Brian Rock 
Lately, I’ve been tracking which marathons are selling out and how early they’re reaching capacity. This week, another race joined that list: the 2025 St. Jude Memphis Marathon. At the beginning of the month, race organizers noted that the race was at 95% capacity. This week, it officially sold out. This was after selling out … Read more
This morning, BAA announced the cutoff for the 2026 Boston Marathon: 4:34. Read a preliminary analysis of the data they released here. This morning, the Boston Athletic Association released the number of qualified applicants for the 2026 Boston Marathon: 33,267. Which begs the immediate question – what does this mean for the cutoff time? Throughout … Read more
The BAA released the number of applicants for the 2026 Boston Marathon: 33,267. Here’s a revised prediction that takes this new data into account. This evening, the registration period for the 2026 Boston Marathon comes to a close. After tracking data to project the likely cutoff time throughout the year, I published my final prediction … Read more
Feature photo courtesy of Nationwide Children’s Hospital Columbus Marathon Were you waiting to sign up for the 2025 Columbus Marathon? Well, it’s too late. This year’s race is officially sold out. As I’ve written before, we’re seeing marathons sell out more frequently and earlier than they have in the past. When I wrote that analysis, … Read more
Photo by Jake Rytlewski / Courtesy of Beyond Monumental I hope you weren’t waiting to sign up for the 2025 Indianapolis Monumental Marathon – because it is officially sold out. As I’ve written about before, we’re seeing marathons sell out more frequently and earlier than they have in the past. When I wrote that analysis, … Read more
The BAA has announced the number of applicants for the 2026 Boston Marathon: 33,267. That’s slightly lower than expected, suggesting that the cutoff will also be slightly lower than prediction. Here’s a revised prediction that takes these numbers into account. It’s finally here: registration week for the Boston Marathon. For the better part of the … Read more
Feature image by Massachusetts Office of Travel – CC BY-ND 2.0 The BAA released the number of applicants for the 2026 Boston Marathon: 33,267. Here’s a revised prediction that takes this new data into account. Registration for the 2026 Boston Marathon is this week – September 8 to September 12, 2025. The final qualifying race … Read more
With the Boston Marathon registration period opening on Monday, I’ve been trying to tie up a few loose ends when it comes to predicting the cutoff time for 2026. One of those unanswered questions was how much the Sydney Marathon results would matter. Another is whether Canadian runners will choose to skip Boston. Earlier this … Read more
We’re getting to the end of the qualifying period for the 2026 Boston Marathon, and all signs are pointing towards a cutoff time in excess of five minutes. But there’s one big unanswered question that could influence where things actually land: how much do the results of the Sydney Marathon matter? On the one hand, … Read more
The Richmond Marathon just sold out, and it’s not alone. It’s part of a broader trend that’s been developing the last few years along with the recent boom in marathon participation. I first noticed this over the summer, when Philly sold out months earlier than usual. Just a couple of weeks later, Twin Cities followed … Read more